108 lines
3 KiB
C#
108 lines
3 KiB
C#
/*
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* Copyright (c) 2019 ETH Zürich, Educational Development and Technology (LET)
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*/
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using System.Linq;
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using System.Threading.Tasks;
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using System.Windows;
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using System.Windows.Controls;
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using System.Windows.Controls.Primitives;
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using System.Windows.Media;
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using System.Windows.Threading;
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using SafeExamBrowser.Applications.Contracts;
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using SafeExamBrowser.UserInterface.Contracts.Shell;
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using SafeExamBrowser.UserInterface.Shared.Utilities;
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namespace SafeExamBrowser.UserInterface.Desktop.Controls
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{
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public partial class TaskbarApplicationControl : UserControl, IApplicationControl
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{
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private IApplication application;
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private IApplicationWindow single;
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public TaskbarApplicationControl(IApplication application)
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{
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this.application = application;
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InitializeComponent();
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InitializeApplicationControl();
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}
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private void InitializeApplicationControl()
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{
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var originalBrush = Button.Background;
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application.WindowsChanged += Application_WindowsChanged;
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Button.Click += Button_Click;
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Button.Content = IconResourceLoader.Load(application.Icon);
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Button.MouseEnter += (o, args) => WindowPopup.IsOpen = WindowStackPanel.Children.Count > 0;
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Button.MouseLeave += (o, args) => Task.Delay(250).ContinueWith(_ => Dispatcher.Invoke(() => WindowPopup.IsOpen = WindowPopup.IsMouseOver));
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Button.ToolTip = application.Tooltip;
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WindowPopup.CustomPopupPlacementCallback = new CustomPopupPlacementCallback(WindowPopup_PlacementCallback);
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WindowPopup.MouseLeave += (o, args) => Task.Delay(250).ContinueWith(_ => Dispatcher.Invoke(() => WindowPopup.IsOpen = IsMouseOver));
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WindowPopup.Opened += (o, args) =>
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{
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Background = Brushes.LightGray;
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Button.Background = Brushes.LightGray;
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};
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WindowPopup.Closed += (o, args) =>
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{
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Background = originalBrush;
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Button.Background = originalBrush;
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};
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}
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private void Application_WindowsChanged()
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{
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Dispatcher.InvokeAsync(Update);
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}
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private void Button_Click(object sender, RoutedEventArgs e)
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{
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if (WindowStackPanel.Children.Count == 0)
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{
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application.Start();
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}
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else if (WindowStackPanel.Children.Count == 1)
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{
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single?.Activate();
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}
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}
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private CustomPopupPlacement[] WindowPopup_PlacementCallback(Size popupSize, Size targetSize, Point offset)
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{
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return new[]
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{
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new CustomPopupPlacement(new Point(targetSize.Width / 2 - popupSize.Width / 2, -popupSize.Height), PopupPrimaryAxis.None)
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};
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}
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private void Update()
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{
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var windows = application.GetWindows();
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WindowStackPanel.Children.Clear();
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foreach (var window in windows)
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{
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WindowStackPanel.Children.Add(new TaskbarApplicationWindowButton(window));
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}
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if (WindowStackPanel.Children.Count == 1)
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{
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single = windows.First();
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}
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else
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{
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single = default(IApplicationWindow);
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}
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}
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}
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}
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